Sash-lock.



J. BOUNIUL.

SASH LOCK.

APPLICATION FILED SEPT. 17, 1909.

Patented Jan. 18, 1910.

vINVENTOR WITNESSES y JEM,

ATORNEY Asnniw, s4 Gamm co.. plimo-umocmpnens. wmuwmn FCE.

SASI-I-LOCK.

Application led September To all 'whom it 'may concern:

Be it known that l, JOSEPH BoUNIoL, a citizen of the United States,residing at Bridgeport, county of Fairfield, State of Connecticut, haveinvented an Improvement in SasliLoclrs, of which the following is aspecification.

This invention has for its object to provide an anti-rattling sash lockadapted to lock both sashes wholly closed or either or both sashespartly open, that is it will lock both sashes against the openingmovement but will permit the lower sash to be closed if open, and whichshall be provided with means for locking both the locking plate and thedog, thereby securing both sashes against any movement and doing awaywith the pos sibility of tampering with the lock from the outer side.

`With these and other objects in view I have devised the novel sash lockof which the following. description in connection with the accompanyingdrawing is a specification, reference characters being used to indicatethe several parts.

Figure 1 is an elevation illustrating the application of my invention toa window and showing the upper sash slightly lowered and the lower sashslightly raised; Fig. 2 an elevation on an enlarged scale as seen fromthe right in Fig. 1, the upper rail of the lower sash being in sectionand the side rail of the upper sash being slightly broken away; Fig. 3 asection on the line 3 3 in Fig. 4 looking in the direction of thearrows; Fig. 4 a section on the line 4-4 in Fig. 9., looking in thedirection of the arrows; and Fig. 5 is a view corresponding with Fig. 3,illustrating a slightly variant form of construction.

10 denotes the upper sash, 11 the lower sash and 12 a rack upon the siderail of the upper sash, the teeth 13 of which comprise an abruptshoulder on the lower side and an incline upon the upper side, asclearly shown in Fig. 3.

14 denotes the frame or casing of my novel lock which comprisesessentially a base 15 adapted for attachment to the upper rail of thelower sash and side plates 16.

The essential elements of the device are a dog 17 pivoted between theside plates as at 13, a rocker lever 19 pivoted between the side platesas at 2O and a locking plate 21 which slides in the casing and theforward edge of which is beveled on its underside so Specification ofLetters Patent.

Patented Jan. 18, 191.0.

17, 1909. Serial No. 518,213.

l as to adapt it to slip over the teeth of the ratchet when the lowersash is moved downward. The locking plate in the present instance isshown as extending through slots 22 at the forward end of the casing andas retained against lateral movement by upwardly-turned lugs 23 on thelocking plate which lie on the outer sides of the side plates. Thelocking plate is provided with a rearwardly extending shank Q4Awhich isconnected to the lower end of the rocker lever. ln the form illustratedin Figs. 3 and 4, the rear end of the shank is pivoted in a slot 25 inthe-rocker lever, as at 26. In the form illustrated in Fig. 5 the shankis a screw which passes through a hole or slot in the rocker lever, isprovided with a head 27 bearing upon the rear face of the rocker leverand adjustably engages a block 37 on the locking plate. rlhe upper endof the rocker lever is provided with a rounded lug 23 which is adaptedto engage a correspondingly rounded lug 29 on the dog, as is clearlyshown in Figs. 3 and 5. A. spring 30 surrounding the shank acts toretain the locking plate and the dog in the engaging position as shownin the drawing. The shank passes through a cross wall 31 between theside plates of the casing and the spring bears against the cross walland against the rear end of the locking plate. The dog is proinoperation and is provided on its engaging face with a pad 33 of rubberor leather which bears against the upper sash to prevent the possibilityof rattling.

In use, the spring acts to retain the parts in the locking position, asshown in the drawing. The rack is made long enough to permit the sashesto be locked when the lower sash is raised and the upper sash islowered, either or both, for the purpose of ventilation. ln order toenable the sashes to be placed in any desired position, the operator, bymeans of the Iinger piece on the dog, swings the dog backward out ofengagement with the upper sash, the effect of which is to swing theupper end of the rocker lever forward and the lower end backward and towithdraw the locking plate from engagement with the rack. The instantthe operator relieves the backward pressure upon the dog the spring willthrow the locking plate forward into engagement with the teeth of therack and by means of the rocker lever will throw the dog into engagementwith the face ofthe sash (in vided with a finger piece 32 forconvenience the present instance against the face of the rack). Whenlocked in the partly open position the lower sash may be closed withoutmanipulation of the lock by simply moving it downward, the beveled faceof the locking plate slipping freely over the bevels of the rack teethbut the shoulders on said teeth preventing upward movement of the sash.

In order to render the lock absolutely secure against any possiblemanipulation of the dog from above or below when a sash is partly open,I provide a locking screw 34, which in the form illustrated in Figs. 1to l inclusive is mounted in lugs 35 upon the outer side of the casingand the forward end of which is adapted to bear upon one of theupwardly-turned lugs 23 upon the locking plate to prevent the retractionof the plate. As shown in the drawing, the screw is not in operativeposition and the. locking plate is free to be operated by means of thedog against the power ot' the spring.

In the form illustrated in Fig. 5, the structure dilers in that thelocking screw is mounted in a yoke 36 upon the rear of the casing and isadapted to bear against the head :27 of shank 24. The effect is the samein both cases; that is, to lock the locking plate against retraction andto lock the dog against movement.

Having thus described my invention I claim:

l. A sash lock comprising a sliding locking plate, a pivotedanti-rattling dog, a rocker lever engaging the dog and connected to thelocking plate and a spring acting to retain the locking plateand dog inthe locking position.

2. A sash lock comprising a sliding locking plate, a pivotedanti-rattling dog having a lng, a rocker lever having a lug engaging thelugon the dog and being connected to the locking plate and a springacting to retain the locking plate and dog in the locking position.

3. A sash lock comprising a sliding locking plate, a pivoted antirattling dog, a rocker lever engaging the dog and connected to thelocking plate, a spring acting to retain the locking plate and dog inthe locking position and means for locking the locking plate and dog inthe locking position.

A. A sash lock comprising a sliding locking plate, a pivotedantirattling dog, a rocker lever engaging the dog and connected to thelocking plate, a spring acting to retain the locking plate and dog inthe locking position and a locking screw engaging the locking plate toretain the parts in the locking position.

5. A sash lock comprising a sliding locking plate having a bevel, apivoted dog, a rocker lever engaging the dog and connected to thelocking plate, a spring acting on the locking plate and a rack adaptedto be engaged by the locking` plate and having teeth provided withabrupt shoulders and inclines.

G. A sash lock comprising a casing having a cross wall, a slidinglocking plate having a shank passing through the cross wall, a pivoteddog, a rocker lever engaging the dog and pivoted to the shank and aspring bearing on the locking plate and the cross wall to retain thelocking plate and dog in the locking position.

In testimony whereof I afx my signature in presence of two witnesses.

JOSEPH BOUNIOL.

Witnesses A. M. W'oosTER, S. YV. ATI-IERTON.

